关于MC9S08PA16使用问题（WDOG）(已解决)

cq203203 · 发表于 2014-3-17 10:50:21

以下WDOG程序（300ms）不工作，请问问题在那里：
#define wdog_unlock() asm(LDA #0xC5); asm(STA 0x3032); asm(LDA #0x20);asm(STA 0x3033);asm(LDA #0xD9); asm(STA 0x3032); asm(LDA #0x28); asm(STA 0x3033)
void wdog_disable(void)
{
wdog_unlock();
WDOG_CNT = 0xC520; // write 0xC520 to the 1st unlock word
WDOG_CNT = 0xD928; // write 0xD928 to the 2nd unlock word
WDOG_CS1 = 0; // disable Watchdog
WDOG_CS2 = 0;
WDOG_TOVAL = 0xffff;
WDOG_WIN = 0;
}
void wdog_enable(void )
{
DisableInterrupts; // disable global interrupt
WDOG_CNT = 0xC520; // write the 1st unlock word
WDOG_CNT = 0xD928; // write the 2nd unlock word
WDOG_TOVAL = 300; // setting timeout value 300ms
WDOG_CS1 = 0x80; // enable counter running
WDOG_CS2 = 1; // setting 1-kHz clock source
EnableInterrupts; // enable global interrupt
}

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